After spending the morning thinking, I finally gave up and got a larger tank, partly filled it, and gave my tiny little cats a chance to swim out from the vase. This was less stressful than anything else I could think of. I realize that the tank was not cycled, but I probably would have scrunched them with eyedropper, net, etc. These are really TINY. There are some alive in the first tank, and at least one in the second tank. After awhile, when they are a bit bigger, I will join them. Just wanted to let you know, I have taken some action... maybe it wasn't what I preferred, but you have to learn by taking some odd chances.

Seahorse, I did that several times, and for every occasion, they were still left in the vase with no water. Finally I gave up on that, these were not leaving their chosen glass home no matter what I tried.

That's ok... if they were in a vase they were not in a cycled tank either so even if you couldn't test the water... doing a daily water change of some kind will keep them safe and increase their growth rate. Good job for moving them!

Because Corys want to gulp air every so often, they need to get to the surface of the tank. Now they are in a Betta tank, but they are so tiny, it is way up there like 12 inches to get some air. Willl the bubbler help them -- it was there originally to keep fungus off the eggs? I have some filters, inside or outside of tank, but will have to put panty hose over the inside one or get one of the sponges to put over the tube filter input. It's keeping the Mollies out in another tank, so works OK, but fish store is a long way off to get the sponge for the bottom. Even the panty hose is a question, because these fish can possibly get through it. How long before I have to worry about doing a cycling of tank, as I can change water until then? Lastly, does cheesecloth work, if I find some to use on the filter?

I would suggest that you lower the water level some. As long as the filter is still working You can slowly raise the water level as they get bigger, right? If the filter creates as much movement as the air stone did in the vase... then no. If it doesn't, then I say add it.
A tank can take up to 6-8 weeks to cycle and that is why I'm suggesting doing a water change every day. Since it's a really small quantity of water its going to be hard to measure dechlorinator, you would probably not need more than one drop for the whole tank. Panty hose would work fine, cheese cloth too as long as there are no holes in it.
Take a DEEP breath!! You're doing great!!

Hee hee, I will get through this; I have no problem with my mollies, babies are a lot bigger, eat without any problem, and flit around like there is no tomorrow. They are very well-fed, and I can even see their colors and their allure. Female black one had babies today, but only about 10; I think it was her first batch. But they are bigger than the Marble female who had about 28 babies yesterday. They are much tinier, but still you can see them OK.

These Cory babies need a magnifying glass to see them, and I have a hard time spotting them along the glass bottom. Don't use gravel or anything yet, they would be totally lost in that. I wanted to clean up the egg waste, and used a q-tip to clean out the gunk (small --wouldn't hurt them). Mixed their water with about 50% new, so it is good & clear. I think I have about 10-12 so far. Temp is about 75F.

I will use the inside filter, with panty hose around the whole thing, with filter floss inside, BioMax, and charcoal. It is mild, doesn't swirl up the water much at all, and I can control it with the air pump. It is pretty old, but will come in handy. Just the thing for little ones. Knew I kept it for some reason, and here it is. I may not be able to keep them alive, but I am sure trying hard. It is a challenge to make such tiny things grow and survive.

So the Corys are still alive, I put a cave thing in there so they would have a place to get some shade from the light (which is keeping the heat up). With the sunlight on the tank, I counted over 20 with some in the cave, so that was just what I could see. They may have hatched some more, or I just couldn't see them very well LOL.

I bought a 3G tank with a filter built-in Marineland Eclipse, and light/hood and a bunch of accessories (including the cave thing) for a whopping $3 at a thrift store. Figured the biowheel filter wouldn't work, but sure enough it did, so I am preparing that for cycling -- gonna put a couple of balloon belly mollies in there. This will become my new QT tank because the baby Mollies need the original 10G QT tank (because I have way too many of them now).

I wonder if the catfish will all be Bronze Corys, or whether there was a mix in the parents' history? Doesn't matter, but would be fun to see a few different ones. Maybe in a few days, these little ones will be big enough to actually see without a magnifying glass?

I have been putting Mollies of all types in my tank, and getting a few that were ready to deliver -- so that has been my focus -- Mollies. I have a lot of babies, and have been getting ready to set up a big baby tank for them. Meanwhile I suddenly noticed that my Cory catfish had spawned some eggs, so I took them out, put them in a small glass vase and let them sit for a while. Then they hatched! I had a real problem getting them out of that vase, which I will never use again. But now they are in their own tank, and I am reporting on their survival. They are so tiny, I can't even see them with my naked eye, so no photographs yet, but that would be a good challenge to use a close up zoom lens to take some pix. When I can see them, I will try to get some pictures lol...

Well, after all of the previous messages, I was happy to have the 20 catfish babies in a tank with the 4 adults, eating and hiding whenever I came by. Now I have another tank with gravel in the bottom, a filter, a heater, and some moss in there. Took some of the eggs out after the Mom laid them and put them in this tank, not really expecting anything, but they hatched out, too. I just put them on the glass walls surface, could see the eggs with a tiny dark blip in the middle and knew they were fertilized, so kept watching and before long I had 30 or so new babies.

These ate the Hikari First Bites and a newer bought Hikari Micro Wafers. Later when they were bigger, I gave them the Hikari Sinking Wafers, which I feed to all the earlier catfish. I also give them shrimp and bloodworms. Catfish love the wafers, and as the wafers sit there, it attracts all of them, so I can see them as they eat. Funny, the new ones have a lot of moss to hide underneath, but they don't have this need to run to a cave when I come around. They are more friendly, at least so far in their life. Cute guys!